Attention should again be turned to the observations of Hess (16) that the negro women of the Columbus Hill District in New York City, whose diets are derived almost exclusively from milled cereal products, tubers and muscle meats, fail to nourish their infants satisfactorily, as is shown by the almost universal prevalence of rickets among them. Because of the limited capacity of the digestive tract, it is difficult for the human being to correct the deficiencies of these products by the consumption of leafy vegetables as the sole protective foods. Milk is the most satisfactory adjuvant to the diet of the nursing mother for the correction of whatever deficiencies it is likely to exhibit in inorganic elements, quality of protein, and fat-soluble A. The inclusion of moderate amounts of raw fruits and of raw salad leaves and vegetables, is the best procedure for making available a satisfactory amount of the anti-scorbutic substance in mother's milk.